(A) U/Pb ages for CAMP intrusives (white circles), CAMP basalts (brown circles), and ash beds from Nevada and Peru (yellow circles), and ammonoid events (1, 7, 8, 32, 34). Note that U/Pb ages 4, 7, 11, and 14 are all from the North Mountain Basalt. 1, Kakoulima intrusion (7); 2, Tarabuco sill (7); 3, Messejana dike (7); 4, North Mountain Basalt (8); 5, Amelal sill (8); 6, Amazonas sill (low Ti) (7); 7, North Mountain Basalt (7, 8); 8, Palisades sill (8), feeder of the Orange Mountain Basalt; 9, York Haven intrusive (8); 10, Rapidan intrusive (8); 11, North Mountain Basalt (7); 12, Fouta Djalon sill (7); 13, Hodh sill (7); 14, North Mountain Basalt (1, 2); 15, Amazonas sill (high Ti) (7); 16, Shelburne dike (7); 17, Rossville intrusive (8); 18, Preakness Basalt (8); 19, Foum Zguid (7); 20, Ash bed LM4-86, Peru (1, 2); 21, Ash bed LM4-90, Peru (1, 2); 22, Ash bed NYC-N10, Nevada (1); 23, Ash bed LM4-100/101, Peru (1, 2); 24, Amazonas Basin sill, Brazil (33); 25, Solimões Basin sill, Brazil (33). (B) Ammonite zones and extinction interval (32). (C to E) Bulk organic C-isotope (as ‰ of Vienna Pee Dee belemnite) (9, 32) and Hg/TOC (in ppb/%) records for (C) Stenlille-1, (D) Kuhjoch, Austria (17, 34), and (E) New York Canyon, Nevada (16). For an expanded version of this figure showing correlations of Hg/TOC-records and Hg -records of all studied localities, see fig. S2.